Surgical instruments and apparatus; artificial surgical implants and protheses; external fixing devices for protecting and stabilising bones, containing aluminium, titanium, stainless steel or carbon, fibre bone staples (pins), stems, rings, wires and fastening parts; screws, nails, tensioning devices, forceps, stems and wires for fixation of membranes and bones; instruments and tools for implanting the aforesaid protheses and parts of protheses as well as for operatory treatment of fractures